Reading The Registers; Manufacturer Id Register; Device Type Register; Status/Control Register - Agilent Technologies E1472A User Manual

Reading the Registers

Manufacturer ID
Register
Device Type
Register
Status/Control
Register
52 Register-Based Programming
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The Status/Control Register offset is 04 h (from below), so the command
register address is:
[ a d d r e s s s p a c e ] + [ m o d u l e a d d r e s s ]
h
1 F 0 0 0 0 + D E 0 0 + 0 4
h h
You can read the following RF Multiplexer registers:
•
Manufacturer ID Register (base+0
•
Device Type Register (base+0
•
Status/Control Register (base+04
•
Remote Module Register (base+06
•
Remote Module Register (base+08
•
Remote Module Register (base+0A
•
Module 00 Bank 00-02 Channel Enable Register (base+10
•
Module 00 Bank 03-05 Channel Enable Register (base+12
•
Module 01 Bank 00-02 Channel Enable Register (base+14
•
Module 01 Bank 03-05 Channel Enable Register (base+16
•
Module 02 Bank 00-02 Channel Enable Register (base+18
•
Module 02 Bank 03-05 Channel Enable Register (base+1A
Reading this register returns FFFF
manufacturer and the module is an A16 register-based device.
Reading this register returns 0180
Multiplexer module, with or without Expander module(s) connected. The
E1474A/E1475A use the same Device ID as the E1472A/E1473A. However,
the relay module will generate a different remote module code to distinguish
between the modules (see "Remote Module ID Registers" in this appendix).
The Status/Control Register informs the user about the modules status.
Each relay requires about 15 msec execution time during which time the RF
multiplexers are "busy". Bit 7 of this register is used to inform the user of a
"busy" condition.
In addition, the interrupt generated after a channel has been closed can be
disabled. Bit 6 of this register is used to inform the user of the interrupt
status. A read of the Status/Control register (base+04
•
FFBF when the module is not busy and interrupt is enabled.
h
•
FF3F when the module is busy and interrupt is enabled.
h
•
FFFF when the module is not busy and interrupt is disabled.
h
•
FF7F when the module is busy and interrupt is disabled.
h
+ [ r e g i s t e r o f f s e t ]
h
= 1 F D E 0 4
h h
)
h
)
h
)
h
) [Module 00 status]
h
) [Module 01 status]
h
) [Module 02 status]
h
. This shows Hewlett-Packard is the
h
if the device is the E1474A RF
h
) returns:
h
=
h
)
h
)
h
)
h
)
h
)
h
)
h
Appendix B